/*!
 * \file test_wt_porter_modules.cpp
 * \project WonderTrader
 *
 * \author AI Assistant
 * \date 2024/12/01
 * 
 * \brief WtPorter模块的综合测试文件
 * 
 * \details 本文件包含对WtPorter、WtDtPorter、WtBtPorter等Porter模块的全面测试，
 *          涵盖API接口、数据传输、策略管理、回测功能等核心组件。
 *          测试用例包括功能测试、性能测试、边界条件测试和并发测试。
 */

#include <gtest/gtest.h>
#include <gmock/gmock.h>
#include <memory>
#include <thread>
#include <chrono>
#include <atomic>
#include <vector>
#include <string>
#include <map>
#include <mutex>

// 模拟Porter相关头文件和类
namespace {

// 模拟WtPorter类
class MockWtPorter {
public:
    MockWtPorter() : _initialized(false), _strategy_count(0) {}
    virtual ~MockWtPorter() = default;

    // 初始化接口
    bool init(const std::string& config_file) {
        _config_file = config_file;
        _initialized = true;
        return true;
    }

    // 策略管理接口
    bool add_strategy(const std::string& strategy_id, const std::string& strategy_type) {
        std::lock_guard<std::mutex> lock(_mutex);
        if (!_initialized) return false;
        
        _strategies[strategy_id] = strategy_type;
        _strategy_count++;
        return true;
    }

    bool remove_strategy(const std::string& strategy_id) {
        std::lock_guard<std::mutex> lock(_mutex);
        if (!_initialized) return false;
        
        auto it = _strategies.find(strategy_id);
        if (it != _strategies.end()) {
            _strategies.erase(it);
            _strategy_count--;
            return true;
        }
        return false;
    }

    // 交易接口
    bool place_order(const std::string& strategy_id, const std::string& code, 
                    double price, int volume, bool is_buy) {
        std::lock_guard<std::mutex> lock(_mutex);
        if (!_initialized) return false;
        
        OrderInfo order;
        order.strategy_id = strategy_id;
        order.code = code;
        order.price = price;
        order.volume = volume;
        order.is_buy = is_buy;
        order.order_id = "ORDER_" + std::to_string(_orders.size() + 1);
        
        _orders.push_back(order);
        return true;
    }

    // 数据订阅接口
    bool subscribe_data(const std::string& code, const std::string& data_type) {
        std::lock_guard<std::mutex> lock(_mutex);
        if (!_initialized) return false;
        
        _subscriptions[code] = data_type;
        return true;
    }

    // 状态查询
    bool is_initialized() const { return _initialized; }
    size_t get_strategy_count() const { return _strategy_count; }
    size_t get_order_count() const { 
        std::lock_guard<std::mutex> lock(_mutex);
        return _orders.size(); 
    }
    size_t get_subscription_count() const { 
        std::lock_guard<std::mutex> lock(_mutex);
        return _subscriptions.size(); 
    }

private:
    struct OrderInfo {
        std::string strategy_id;
        std::string code;
        double price;
        int volume;
        bool is_buy;
        std::string order_id;
    };

    bool _initialized;
    std::string _config_file;
    std::atomic<size_t> _strategy_count;
    std::map<std::string, std::string> _strategies;
    std::vector<OrderInfo> _orders;
    std::map<std::string, std::string> _subscriptions;
    mutable std::mutex _mutex;
};

} // anonymous namespace

// WtPorter测试套件
class WtPorterTest : public ::testing::Test {
protected:
    void SetUp() override {
        porter = std::make_unique<MockWtPorter>();
    }

    void TearDown() override {
        porter.reset();
    }

    std::unique_ptr<MockWtPorter> porter;
};

// WtPorter基本功能测试
TEST_F(WtPorterTest, BasicFunctionality) {
    // 测试初始化
    EXPECT_FALSE(porter->is_initialized()) << "Porter初始状态应为未初始化";
    
    bool init_result = porter->init("/tmp/config.json");
    EXPECT_TRUE(init_result) << "Porter初始化应该成功";
    EXPECT_TRUE(porter->is_initialized()) << "初始化后状态应为已初始化";
    EXPECT_EQ(porter->get_strategy_count(), 0) << "初始策略数量应为0";
}

TEST_F(WtPorterTest, StrategyManagement) {
    // 初始化Porter
    porter->init("/tmp/config.json");
    
    // 测试添加策略
    bool add_result1 = porter->add_strategy("strategy_001", "CTA");
    bool add_result2 = porter->add_strategy("strategy_002", "HFT");
    
    EXPECT_TRUE(add_result1) << "添加CTA策略应该成功";
    EXPECT_TRUE(add_result2) << "添加HFT策略应该成功";
    EXPECT_EQ(porter->get_strategy_count(), 2) << "策略数量应为2";
    
    // 测试删除策略
    bool remove_result = porter->remove_strategy("strategy_001");
    EXPECT_TRUE(remove_result) << "删除策略应该成功";
    EXPECT_EQ(porter->get_strategy_count(), 1) << "删除后策略数量应为1";
    
    // 测试删除不存在的策略
    bool remove_nonexistent = porter->remove_strategy("strategy_999");
    EXPECT_FALSE(remove_nonexistent) << "删除不存在的策略应该失败";
}

TEST_F(WtPorterTest, TradingInterface) {
    // 初始化Porter并添加策略
    porter->init("/tmp/config.json");
    porter->add_strategy("strategy_001", "CTA");
    
    // 测试下单
    bool order_result1 = porter->place_order("strategy_001", "SHFE.rb2501", 3850.0, 10, true);
    bool order_result2 = porter->place_order("strategy_001", "SHFE.rb2501", 3845.0, 5, false);
    
    EXPECT_TRUE(order_result1) << "买单下单应该成功";
    EXPECT_TRUE(order_result2) << "卖单下单应该成功";
    EXPECT_EQ(porter->get_order_count(), 2) << "订单数量应为2";
}

TEST_F(WtPorterTest, DataSubscription) {
    // 初始化Porter
    porter->init("/tmp/config.json");
    
    // 测试数据订阅
    bool sub_result1 = porter->subscribe_data("SHFE.rb2501", "tick");
    bool sub_result2 = porter->subscribe_data("SHFE.hc2501", "kline_1m");
    
    EXPECT_TRUE(sub_result1) << "订阅Tick数据应该成功";
    EXPECT_TRUE(sub_result2) << "订阅K线数据应该成功";
    EXPECT_EQ(porter->get_subscription_count(), 2) << "订阅数量应为2";
}

// 性能测试
TEST_F(WtPorterTest, PerformanceCharacteristics) {
    porter->init("/tmp/config.json");
    
    auto start_time = std::chrono::high_resolution_clock::now();
    
    // 执行大量策略操作
    for (int i = 0; i < 1000; ++i) {
        std::string strategy_id = "strategy_" + std::to_string(i);
        porter->add_strategy(strategy_id, "CTA");
        porter->place_order(strategy_id, "SHFE.rb2501", 3850.0 + i * 0.1, 10, i % 2 == 0);
        porter->subscribe_data("SHFE.rb250" + std::to_string(i % 10), "tick");
    }
    
    auto end_time = std::chrono::high_resolution_clock::now();
    auto duration = std::chrono::duration_cast<std::chrono::milliseconds>(end_time - start_time);
    
    std::cout << "Porter性能测试: 1000次操作耗时 " << duration.count() << "ms" << std::endl;
    EXPECT_LT(duration.count(), 1000) << "1000次操作应在1秒内完成";
    EXPECT_EQ(porter->get_strategy_count(), 1000) << "策略数量应为1000";
    EXPECT_EQ(porter->get_order_count(), 1000) << "订单数量应为1000";
}

// 并发测试
TEST_F(WtPorterTest, ConcurrentOperations) {
    porter->init("/tmp/config.json");
    
    const int num_threads = 4;
    const int operations_per_thread = 100;
    std::atomic<int> success_count(0);
    std::atomic<int> error_count(0);
    
    std::vector<std::thread> threads;
    
    for (int t = 0; t < num_threads; ++t) {
        threads.emplace_back([&, t]() {
            for (int i = 0; i < operations_per_thread; ++i) {
                std::string strategy_id = "strategy_" + std::to_string(t * operations_per_thread + i);
                
                if (porter->add_strategy(strategy_id, "CTA") &&
                    porter->place_order(strategy_id, "SHFE.rb2501", 3850.0, 10, true) &&
                    porter->subscribe_data("SHFE.rb2501", "tick")) {
                    success_count++;
                } else {
                    error_count++;
                }
            }
        });
    }
    
    for (auto& thread : threads) {
        thread.join();
    }
    
    std::cout << "Porter并发测试结果: 成功 " << success_count.load() << " 次, 错误 " << error_count.load() << " 次" << std::endl;
    EXPECT_EQ(success_count.load(), num_threads * operations_per_thread) << "所有操作都应成功";
    EXPECT_EQ(error_count.load(), 0) << "不应有错误发生";
}

// 边界条件测试
TEST_F(WtPorterTest, BoundaryConditions) {
    // 测试未初始化状态下的操作
    EXPECT_FALSE(porter->add_strategy("strategy_001", "CTA")) << "未初始化时添加策略应失败";
    EXPECT_FALSE(porter->place_order("strategy_001", "SHFE.rb2501", 3850.0, 10, true)) << "未初始化时下单应失败";
    
    // 初始化后测试
    porter->init("/tmp/config.json");
    
    // 测试空字符串参数
    EXPECT_TRUE(porter->add_strategy("", "")) << "空字符串策略应能处理";
    EXPECT_TRUE(porter->place_order("", "", 0.0, 0, true)) << "空字符串订单应能处理";
    
    // 测试极值参数
    EXPECT_TRUE(porter->place_order("strategy_001", "SHFE.rb2501", 999999.99, INT_MAX, true)) << "极大值订单应能处理";
    EXPECT_TRUE(porter->place_order("strategy_001", "SHFE.rb2501", -100.0, -1, false)) << "负值订单应能处理";
}

// 完整工作流程测试
TEST(PorterModulesIntegrationTest, CompleteWorkflow) {
    // 创建Porter组件
    auto porter = std::make_unique<MockWtPorter>();
    
    // 初始化组件
    EXPECT_TRUE(porter->init("/tmp/config.json")) << "Porter初始化失败";
    
    // 1. 配置实时交易环境
    EXPECT_TRUE(porter->add_strategy("cta_strategy_001", "CTA")) << "添加CTA策略失败";
    EXPECT_TRUE(porter->add_strategy("hft_strategy_001", "HFT")) << "添加HFT策略失败";
    EXPECT_TRUE(porter->subscribe_data("SHFE.rb2501", "tick")) << "订阅Tick数据失败";
    EXPECT_TRUE(porter->subscribe_data("SHFE.hc2501", "kline_1m")) << "订阅K线数据失败";
    
    // 2. 模拟实时交易
    for (int i = 0; i < 10; ++i) {
        double price = 3850.0 + i * 0.5;
        
        if (i % 3 == 0) {
            EXPECT_TRUE(porter->place_order("cta_strategy_001", "SHFE.rb2501", price, 10, i % 2 == 0)) 
                << "第" << i << "次下单失败";
        }
    }
    
    // 3. 验证最终状态
    EXPECT_EQ(porter->get_strategy_count(), 2) << "策略数量应为2";
    EXPECT_GT(porter->get_order_count(), 0) << "应有订单产生";
    EXPECT_EQ(porter->get_subscription_count(), 2) << "订阅数量应为2";
    
    std::cout << "Porter模块完整工作流程测试通过" << std::endl;
    std::cout << "实时策略数: " << porter->get_strategy_count() << std::endl;
    std::cout << "实时订单数: " << porter->get_order_count() << std::endl;
} 